I believe your approach to bullying other Flight Plan sources into shutting their electronic doors is a) Reprehensible, b) VERY bad for your business and c) Not Legally supportable.
I for one will withold my future business and it seems many others will as well. Your claims regarding $/day lost due to other flight plan source activity is ludicrous. I have generally used your flight planner al;ong with others all on same flight because I believed they wr=ere complimentary and provided different services, none complete in themselves.
You should re-think your strategy here. It is a very bad business decision